Hi Sir
In linux there is no need to change the mode ,different parameters it will auto change the mode you can check the 6590 user guide :
http://www.tbsiptv.com/download/tbs6590/tbs6590_user_guide.pdftake example:
6.4 LockTVChannelsfromDVB-T2Signal.
(Input0) #dvblast-f474000000-b8-a0-5dvbt2 (Input1) #dvblast-f474000000-b8-a1-5dvbt2
6.5 LockTVChannelsfromDVB-CSignal.
(Input0)#dvblast-f474000000-s6900000-a0-5dvbc_annex_a (Input1)#dvblast-f474000000-s6900000-a1-5dvbc_annex_a
6.6 LockTVChannelsfromDVB-SSignal.
(Input0)#dvblast-f12538000-s41250000-v13-a0-n1 (Input1)#dvblast-f12538000-s41250000-v13-a1-n1
6.7 LockTVChannelsfromDVB-S2Signal.
(Input0)#dvblast-f12660000-s45000000-v13-mpsk_8-a0-n1 (Input1)#dvblast-f12660000-s45000000-v13-mpsk_8-a1-n1
Thanks
Kind Regards
steven